Do you think you've got decent science knowledge? It's time to put your gray matter to the test with our weekly, free science crossword puzzle. We've spent hours carefully writing our puzzles to make ...

This week’s science roundup covers 2025’s near-record heat, a new mpox strain and fresh clues about why hobbits vanished 50,000 years ago. Journalist Karen Hao unpacks the rise of AI “empires,” their ...